1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1986, 1988, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94
37 */
38
39 #include <sys/cdefs.h>
40
41 #include <sys/types.h>
42 #include <stdio.h>
43 #include "hexdump.h"
44
45 void
hexdump(const void * ptr,int length,const char * hdr,int flags)46 hexdump(const void *ptr, int length, const char *hdr, int flags)
47 {
48 int i, j, k;
49 int cols;
50 const unsigned char *cp;
51 char delim;
52
53 if ((flags & HD_DELIM_MASK) != 0)
54 delim = (flags & HD_DELIM_MASK) >> 8;
55 else
56 delim = ' ';
57
58 if ((flags & HD_COLUMN_MASK) != 0)
59 cols = flags & HD_COLUMN_MASK;
60 else
61 cols = 16;
62
63 cp = ptr;
64 for (i = 0; i < length; i += cols) {
65 if (hdr != NULL)
66 printf("%s", hdr);
67
68 if ((flags & HD_OMIT_COUNT) == 0)
69 printf("%04x ", i);
70
71 if ((flags & HD_OMIT_HEX) == 0) {
72 for (j = 0; j < cols; j++) {
73 k = i + j;
74 if (k < length)
75 printf("%c%02x", delim, cp[k]);
76 else
77 printf(" ");
78 }
79 }
80
81 if ((flags & HD_OMIT_CHARS) == 0) {
82 printf(" |");
83 for (j = 0; j < cols; j++) {
84 k = i + j;
85 if (k >= length)
86 printf(" ");
87 else if (cp[k] >= ' ' && cp[k] <= '~')
88 printf("%c", cp[k]);
89 else
90 printf(".");
91 }
92 printf("|");
93 }
94 printf("\n");
95 }
96 }
97